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首页> 外文期刊>Michigan Academician >Late Holocene (Little Ice Age Interval) Microvertebrates from Mackinac County, Michigan
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Late Holocene (Little Ice Age Interval) Microvertebrates from Mackinac County, Michigan

机译：来自密歇根州麦基诺县的晚全新世（小冰期间隔）微脊椎动物

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摘要

Microvertebrate remains from a dolomitic fissure in the Middle Silurian Engadine Dolomite, Mackinac County, Michigan, represent at least 9 species of Late Holocene (Little Ice Age Interval) vertebrates. These species include Bufo americanus and Pseudacris crucifer (a toad and a frog), Blarina brevicauda and Sorex cinereus (shrews), Myotis cf. Myotis septentrionalis (a bat), Peromyscus maniculatus or Peromyscus leucopus (mice), and Clethrionomys gapperi, Microtus pennsylvanicus, and Synaptomys cf. Synaptomys borealis (voles). All of these currently live in Mackinac County except for the Northern Vole (Synaptomys cf. S. borealis), which occurs in boreal habitats well north of Lake Superior. If the identification of the Northern Vole is correct, the temperature at the time of the accumulation of the bones was probably cooler than at present, and there was probably a greater percentage of coniferous trees in the area. Wetlands must have beenpresent nearby to support the aquatic larvae of the toad and the frog. Wetlands currently lie within a few hundred meters of the site.
机译：来自密歇根州麦基诺县志留纪中部恩加丁白云岩中白云质裂缝的微脊椎动物遗体，至少代表了晚全新世（小冰期间隔）脊椎动物的9种。这些物种包括美洲蟾蜍和假十字花科植物（蟾蜍和青蛙），短鞭藻（Blarina brevicauda）和灰狐猴（Sorex cinereus）（sh），Myotiscf。 Myotis septentrionalis（蝙蝠），manperulascus maniculatus或leuperuscus leucopus（小鼠）和Clethrionomys gapperi，Microtus pennsylvanicus和Synaptomys参见。北方突触（田鼠）。目前，所有这些人都生活在麦基诺县，但北部田鼠（Synaptomys cf. S.boalis）除外，后者发生在苏必利尔湖以北的北方生境中。如果对北部田鼠的鉴定正确，那么骨头堆积时的温度可能会比现在更低，并且该地区的针叶树百分比可能更高。必须在附近有湿地来支撑蟾蜍和青蛙的水生幼虫。湿地目前位于该地点的几百米之内。

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